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Industrial metrology

Metrology equipment is vital to a wide range of industries, allowing the science of measurement to provide increasing levels of accuracy in the manufacture of other artefacts. Discover more through the range of objects in our collection.

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Early example of a Sigma mechanical comparator with workings visible. Made 1945-1955

Early example of a Sigma mechanical comparator

circa 1940

Level comparator - Matrix, serial no. P.2690-1956 by Conventry Gauge & Tool Company

Level comparator - Matrix

1956

Horizontal optical comparator made by Troughton and Simms: 1940-1945

Horizontal optical comparator

1940-1945

Vertical measuring machine - Hilger & Watts Ltd, Microptic, with transformer, serial no. 96967

Vertical measuring machine - Hilger & Watts Ltd

Optical comparator used for the rapid checking of items such as gauges to close limits, using a mechanical feeler and an "optical lever". Made by Societe Genevoise d'Instruments de Physique in 1960.

Optical comparator used for the rapid checking of items such as gauges to close limits

1960

Photograph of circle dividing machine of the Topographic Department of the Russian General Staff St.Petersburg

Photograph of circle dividing machine

Two Laser heads model 5500C

1973

Zeiss Toolroom bench microscope with accessories, made in 1944 and used for war reparation.

Zeiss Toolroom bench microscope with accessories

1944

Sigma Instruments thickness gauge, 1951 stored in a box and fitted with a inspection fitting for measuring screw thread acceptibility. Purchased from Plessey Records in 1951.

Sigma Instruments thickness gauge

1951

Projection screw thread measuring apparatus of 1917

1917

A steel rule demonstrating how a diameter measurement could be taken using a rule and caliper (/1 Pt1)

Steel rule, for rule and caliper type measurement

N. K.

Setting bar 4" nominal size for setting the adjustable gauge.

setting gauge

1907

Prestwich micrometer fluid comparator 1945 to 1955.

Prestwich micrometer fluid comparator

1945-1955

A ring gauge used to locate 'Zero Point' to suit the marking system.

A ring gauge used to locate 'Zero Point' to suit the marking system

1892

An example of a internally and externally threaded lens holder.

An example of an internally and externally threaded lens holder

1892

Set of external and internal caliper gauges, thirteen components in case, Windley bros Limited, Chelmsford, Essex, United Kingdom, 1910

Set of external and internal caliper gauges

1910

Case for 25mm standard micrometer with vernier

A chaser for cutting 24 t.p.i.internal or external threads.

Chaser for cutting 24 t.p.i.internal or external threads

1892

Two canvas cases

Standard metre end-measuring bar, c. 1900

circa 1900

Photograph of an illustration of the Duc de Chaulnes' linear dividing machine, 1768

Photograph of an illustration of the Duc de Chaulnes' linear dividing machine

Photograph of an illustration of the Duc de Chaulnes' circular dividing machine, 1768

Photograph of an illustration of the Duc de Chaulnes' circular dividing machine

4 Dial gauge for comparator use, made by Compar, with adjustable upper and lower acceptable tolerance indication; 1939-1946.

4 Dial gauge for comparator use

1939-1946

Whitworth measuring machine in glass case with 2 'V' plates, a mahogany box of measuring heads and an open spanner and a ring spanner.

Whitworth measuring machine in glass case with 2 'V' plates

OMT roundness measuring machine type AH1, 1948.

1948

5" to 5 1/2" internal bore micrometer reading to thousandths of an inch patented by J. E. Storey in 1902 and made by Newall Engineering Co., Warrington.

5" to 5 1/2" internal bore micrometer reading to thousandths of an inch

1902 or later

Screw pitch measuring machine 3"x7". Designed by N.P.L. and made by G. Cussons Ltd in 1942. Complete with R7/8" standard thread test piece

Screw pitch measuring machine 3"x7"

1942

Two micrometer surface testers used together and with electric bell system to measure divergence from flatness of large plane surfaces; designed and used by Dr. P.E. Shaw for experimental work in 1911.

Micrometer surface testers

1911

Screw pitch measuring machine designed by E. M. Eden designed c. 1915, at the NPL, Teddington, made c. 1919, with a wooden accessory box.

Screw Pitch Measuring Machine

1915-1919

Micrometer heads for internal diameter machine

A micrometer beam caliper made in 1854 by T. F. Chappi for use by W. H. Barlow during his investigations into the strength of beams.

Micrometer beam caliper

1854

Set of Hoffmann Roller Gauges, complete in box (no. 838) 3/16" to 1 1/4"sizes; 16 in total.

Set of Hoffmann Roller Gauges

1925

Incomplete set of parts for Whitworth measuring machine

Parts for Whitworth measuring machine

3 dial gauges by Mitutoyo with open back to reveal working mechanism, 0 to 10 mm range, model No 2046-08; mounted on a perspex display mount.

3 dial gauges by Mitutoyo with open back to reveal working mechanism

1982

Micro 2000 electronic micrometer Imperial

Photograph (12" x 10") of dividing engine constructed by George W. Watts in 1905, ( Prepared in museum from negative lent by Messrs E.R.Watts & Son, Ltd.)

Photograph (12" x 10") of dividing engine constructed by George W. Watts in 1905

Electrical connection leads for the Talysurf 4 surface finish measuring instrument, made by Taylor Hobson, c.1965.

Electrical connection leads for the Talysurf 4 surface finish measuring instrument

circa 1965

Bench micrometer, 0-2" range, made by Sigma instrument Co. in 1954.

Bench micrometer

1954

Carpenter's folding rule, 2 ft, c. 1900

1900

Photograph (12" x 10") of W.Simms's dividing engine, from Memoirs of the Royal Astronomical Society vol. 15, 1846

Photograph (12" x 10") of W.Simms's dividing engine

Four Laser display units type 5505A

1973

Two resolution extenders (type KO4-5995A), Hewlett Packard Co, United States, 1973

Two resolution extenders (type KO4-5995A)

1973

Circular instrument dividing engine designed by Frederick Cooke, at T. Cooke & Sons, London, England around 1890. The cast brass, 28-inch dividing plate, with nine spokes is supported on a heavy wooden tripod stand. The instrument is mechanically similar in design to the large dividing engine completed by Thomas Cooke, the company’s founder in 1865.

Circular instrument dividing engine.

1890-1895

Tilting platform for the additional monitor for the co-ordinate measuring machine.

Tilting platform for the additional monitor for the co-ordinate measuring machine

circa 1982

Rotating table for mounting the 2 disc drive unit part 16.

Rotating table for mounting the 2 disc drive unit part 16

circa 1982

Table to be placed on the swivelling arm support on the main unit of the co-ordinate measuring machine.

Mounting table

circa 1982

Two cardboard boxes & one paper packet of continuously folded lined paper for a sprocket drive printer.

Paper accessories

circa 1982

Fixture plate for the workpiece with origin gauging point attached to enable base points to be established for use with the Mitutoyo co-ordinate measuring machine.

Fixture plate

1983

Probe and probe holder fitting into the probe socketof the Mitutoyo co-ordinate measuring machine.

Probe and probe holder fitting into the probe socketof the Mitutoyo co-ordinate measuring machine

1983

Supporting stand on four castors for supporting the CRT, printer or keyboard of the Mitutoyo measuring machine.

Supporting stand on four castors for supporting the CRT

1983

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